<!DOCTYPE html>
<html>
  <link rel='stylesheet' type='text/css' href='reference-style.css'>
  <style>
    button.input-color {
      -moz-appearance: button;
    }
    div.input-color-swatch {
      margin-top: 3px;
      margin-bottom: 3px;
    }
  </style>
  <body>
    <button class="input-color">
      <div class="input-color-swatch">
      </div>
    </button>

  </body>
